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[filmscanners] RE: Scanning B & W

Hi Simon,

Why I ask, is because I was curious if the setpoints got set in the scanner,
even though you get raw scan data.  It could very well do that, and would be
a good option, in my opinion.

A few of the scanners I designed had analog setpoints, and adjusted the
output from the CCD so that the setpointed area matched the input voltage
range of the A/D, and therefore increased the tonal resolution within the
valid image space.  It doesn't mitigate the noise, but it brings the noise
into the digital domain, where it can be processed.



> Absolutely correct.  I have been listening and I have learnt ;-)
> Simon
> On 23/4/02 11:22 pm, "Austin Franklin" <darkroom@ix.netcom.com> wrote:
> >> I am getting excellent results scanning on the Sprintscan 120 as
> >> it scans in
> >> raw and then converts to greyscale.  What I now do is scan in
> raw format
> >> using Silverfast (Greyscale 16-bit HDR format), invert in
> >> Photoshop, adjust
> >> the levels and the resultant image is usually just about spot on,
> >> with more
> >> detail than I have seen with RGB or greyscale scans.
> >
> > Hi Simon,
> >
> > I assume you also set the setpoints in PS (not just
> levels/invert), right?
> >
> > Regards,
> >
> > Austin

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